Fluid-tight swiveling coupling.



J. G. LBYNER. FLUID TIGHT SWIVELING COUPLING.

APPLICATION FILED 3111.2, 1912.

1,096,436, Patented May 12, 19-14.

5 member which I have preferably illustratec JOHN GEORGE LEYNER, 0FDENVER, COLORADO.

FLUID-TIGHT SWIVELING COUPLING.

Specification of Letters Patent.

Patented May 12, 1914.

Application filed January 2, 1912. Serial No. 668,849.

To all whom it may concern:

Be it known that I, JOHN Gnonor. Lnrnnn, a citizen of the United Statesof America, residing in the city and county of Denver and State ofColorado, have invented a new and useful l luid-Tight SwivelingCoupling,

of which the following is a specification.

My invention relates to a new and im' proved fluid-tight swivelingcoupling for pipe fitting members having hose connections to machineshaving, when in operation, a vibratory trembling or a severe jarringmovement that tends to loosen the couplings of piping or hose attachedto them, my invention being particularly designed for use in couplingthe water supply conveying hose to rock drilling engines; and theobjects of my invention are: First, to provide a swiveling hose couplingelbow, or nip no or ipe coupling member, that will be fluidtig t toWater, air, steam, or other fluids, and that will remain tight whenconnected to machines having an intense vibratory, trembling, or asevere shaking movement when in operation. Second, to rovide a swivelingwater-tight and'a vi ratory, jarring or shaking movement resistingcoupling joint connection for the water inlet aperture connectin elbowsor nipples used on the rear cylin er heads of water and other fluidusing rock drilling engines. I attain these objects by the mechanismillustrated in the accompanying drawings, in which: 1

Figure 1, is a side view of the improved coupling, showing the sameattached to the back head of a rock drill. Fi 2, is a sectional viewthrough the coupling, showing an elbow fitting in full lines and anipple fitting in dotted lines. Fig. 3, is a front view of the bushingplug, showing the perforated strainer therein. Fig. 4, is a front viewof the union which connects the swiveled fitting to the bushing plug.Fig. 5, is a perspective view of the union. Fig. 6, is a side view ofthe end of the fitting which connects with the bushing. Fi 7, 1s a sideview of the rubber washer W ich is compressed between the end of thefitting and the strainer disk. And Fig. 8, is an edge view of thestrainer disk.

Similar letters of reference refer to similar parts throughout theseveral views.

Referring to the drawings: The numeral 1 designates a bent or elbow pi efittin applied to a rear-cylinder head of a rock dr lling engine,although my improved coupling can be applied equally as well to nipplesor the ends of lengths of pipes, as is shown in Fig. 2, in which thefull lines represent my invention applied to a bent or elbow fitting,and the dot-ted lines represent a nipple fitting on a piece of ipe.

The elbow 1 illustrated in ig. 1 is shown attached to a part 3, of amachine, into which it is desired to convey a fluid such as compressedair or steam or water. This machine portion 3 in Fig. 1, to which theelbow is connected, represents the rear cylinder head of a rock drillingengine, such as is illustrated in my pending application Serial No.644,151, filed August 15, 1911, for improvements in water conveyingapparatus for ejecting rock drillings for rock drilling engines, and wasespecially designed for the purpose of coupling the water conveying hoseto the drilling engine with a coupling joint connection that would notwork loose, and consequently leak under the constant vibratory jarringmovement of the rock drilling engine when drilling holes in rock, as Ihave found in practice that the pipe and hose couplings in common andgen eral use will invariably work loose under the severe and constantvibratory trembling and jarring movement of the drilling engine when inoperation.

To the fluid inletaperture 5, of the machine, to which the coupling isto be attached, a bushing or plug member 6 is sccured, preferably bybeing threaded thereto, although it may be secured in any other suitablemanner. In the rear cylinder head illustrated, however, a threaded fluidinlet aperture is shown, into which a tapering threaded end 8, that isformed on the bush ing member 6, is screwed. This bushing 6, is providedwith a wrench receiving portion 9, and also with a straight threaded endportion 10, that ends in a flat shoulder 10", that is formed at theinner end of the thread against the adjacent side of the wrenchreceiving portion, which is preferably a hexagon surface formed aroundthe bushing. This straight threaded end portion projects from theopposite side of the wrench receiving portion 9, from the taper threadedend 8, and a union sleeve member 11 is interiorly threaded to screw ontoit against the flat shoulder on. the side of the wrench receivterminalend of the elbow is made to extend ing portion. a -This'union sleevemember of my-improvedfcoupling is preferably of hex agon' form in orderto readily receive-a wrench, and "this 'sleeveis arranged' t fit looselyon the elbow or other pipefittmg member, on the end of whichmy improvedcoupling is formed. The elbow or other fitting and permit the elbow orother fitdered portion 14, andthe union sleeve 11 is also provided witha bored shoulder portion 15, within its axial bore, which is arrangedand adapted to fit over and against the shouldered portion l l of theelbow'or other ting to be turned in the sleeve and also in the bushing,as will be presently described. The bushing member 6, is provided with'an axial bore, that extends through it and which is preferably madeintwo difi'erent diameters, 18 and 19, that unite within the bushing in ashoulder 20. The larger bore 18, extends into the union sleeveconnecting end of the bushing, and in the bottom of this larger bore 18,against the shoulder, a disk 21, is inserted. This disk may be made ofany suitable metal or material, but it is preferably made of brass andis also prefer-' ably made to fit tight enough in'the bore to be pressedor driven into its place in the bore against the shoulder and to remainrigidly fastened therein. This brass disk is provided witha number ofsmall. perforations 22, which extend through itand form a, screen forthe entering water or' other 'fluid to flow through. A rubber ring 23,is placed in the bore 18, and it is'arranged to fill this bore closelyand to be pressed into place against the brass plate, and to remainthere by its expanding resilient tension against the wall of thebushings bore. The

into the bore 18 of the bushing member with a close but slidable fit,and this terminal end portion is made .of such a relative length to thelength of the straight threaded nipple portion of the bushing that aclearance space 24, is formed between its enlarged portion 12 and theend of the nipple portion of the bushing so that the sleeve can bescrewed tightly up against the flat shoulder portion of the wrenchreceiving portion of the bushing and still leave a clearancespacebetween the enlarged portion 12, and the" I end of the nipple of thebushing.:' This terminal end of the elbow and therubber ring and thescreening disk are so relatively ,arrang'edin the bushing to the lengthof the threaded nipple'portion of the bushing'and' or the union sleeve,that the union sleeve will screw easily by the fingers of an oper 1 Locaisaator, about three quarters onto the threaded nipple portion of thebushing, and at about this three quarters position of the sleeve-on thenipple the inner end of the coupling end [of the elbow will engage the.rubber ring which is tight against the perforated disk. Then as thesleeve is screwed farther onto the threaded nipple portion of thebushing and up against the flat shoulder 10, the end of the terminalportion of the coupling is 'forced againstthe rubber ring and severelycompresses it between its end and the perforated screening disk. Theopposite end portion of the elbow or other pipe fitting member from theend on which my coupling is formed, is provided with any desired hose orpipe connecting member.

The operation 1s as follows: When applied to the water inlet aperture ofthe rear cylinder head of a rock' drillin engine, the

the perfobushing is first provided wit rated plate and the rubber ring,which are pressed into it and remain there permanently. The bushing isthen screwed very firmly into the threaded inlet aperture of the rearcylinder head and the elbow or nipple is secured to a length of hose26,-by any:

suitable mean I preferably use a clamp 27, for this purpose. The hoseextends to a su ply of water under terminal end of the elbow is insertedby the operator in the axial. aperture of the bushing, and the unionsleeve is threaded onto the outer threaded nipple portion of the bushingas far as it ma be by hand, then a wrench is applied to its wrenchreceiving portion and it is screwed up tightly against the shoulder ofthe bushin and as this is being done the terminal en of the couplingengages and compresses the rubber ring and makes a watertight joint, andat the same time the elbow is free to be turned or to turn with aturning or shifting movement pressure, and the of the hose within boththe sleeve and the bushing. Consequently, my improved cou plingconnecting fitting provides a swivel-, ing oint for. el owsand nipplesthat provides a water and-fluid-tight and swiveling joint and avibratory'jarring movement resisting; coupling 1 connecting fitting, andwhile I have illustrated and described the preferred construction andarrangementof myinvention, I donnot' wish to be limited to} the.construction and arrangement shown.

.Having described my invention, what I claim asynewand desire to securebyLetters Patent is: A V

A s wivel,coupling comprising a bushing having threaded end portions, acentral 'wrejnch-applying shoulder, .and a bore of 'two diameters; anelastic ring within the bore of'larger diameter; a perforated diskbetween 'saidelastic rin and the bore of smaller diameter; -ap1pe-memberfitting within the bore of larger diameter with its end abutting saidelastie ring; a shoulder force said pipe-member inward against the onsaid pipe-member adjacent to but spaced e1 from the end of the bushing;and a union-.

sleeve interiorly threaded to engage the threads of the end of thebushing adjacent said pipe-member and provide with an end collar adapteto extend over and engage the shoulder of the pipe-member to Intestimony whereof I afiix my signature in presence of two witnesses.

astic ring. 10

JOHN GEORGE LEYNER. Witnesses:

G. SABGENT Emorn, FREDERICK WILLIAM KBCNENBERG.

